package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.vo.UserLoginVO;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Slf4j
@Service
public class UserServiceImpl  implements UserService {


    private static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;


    //用户登录模块
    @Override
    public User UserLogin(UserLoginDTO userLoginDTO) {
        log.info("用户登录：{}",userLoginDTO.getCode());
        //通过用户临时登录代码获取openId；
        String openid = getOpenid(userLoginDTO.getCode());
        //判断openid是否为空，如果为空则登录失败
        if (openid == null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断当前用户是否为新用户
        User user=userMapper.selectByOpenid(openid);
        //如果是新用户，自动完成注册
        if (user == null){
            user=User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            log.info("新用户信息：{}",user);
            userMapper.insert(user);//主键回显
            log.info("新用户：{}",user);
            log.info("用户的id：{}",user.getId());
        }
        //返回登录对象
        return user;
    }

    private String getOpenid(String code) {
        Map<String, String> map = new HashMap<>();
        log.info("微信服务器的appid：{}",weChatProperties.getAppid());
        log.info("微信服务端的appsecret：{}",weChatProperties.getSecret());
        log.info("微信服务端的js_code：{}",code);
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code", code);
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, map);
        log.info("微信返回的json数据：{}",json);
        //将json数据转换为对象并获取openid
        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");


        return openid;
    }
}
